While waiting for LA I've been trying to check out mods with new maps since the release of Beta 1935. The one's I know about are OL. I know Kanyhalos is working on a new version of OL that will add some new maps but keep mostly vanilla. AMK I don't know what the heck is going on there. Apparenlty they split up into 2 mods and one of them is going to be CoP (which I think is a dumb move). And I found a map pack that added a bunch of maps to the vanilla game but those new maps are almost totally empty which was a disappointment.

Kany's mate is mering maps to Soc for ol3. There is kostya_v pack, which also contains cs + beta maps in a pack. Also there is a cop pripyat map for soc, which many mod team will use surely... and yep, amk 2. they are also merging some maps from cs and soc to cop.